On Monday 03 June 2019 02:02:53 pm Ken Strauss wrote: > Have you considered trying single flute endmills? With single flute > you could run at twice the RPM of 2 flute and the same chip loads and > axis speeds. That might solve the problem of insufficient power for > high speed movement and insufficient low speed spindle torque.
I changed the vfd, so I've now enough power to run in the 4 to 8 k range, and I can move the steppers in the xy at up to 200 ipm after tossing the crap in the 6040's control box. Z up is much slower though, the Z motor is too small. The A can hold tools at a precise enough angle, but I've not found a cbn cup small enough to mount on a 1/4" or 6mm arbor and spin it 3 or 6 g's. A is fast though, I can spin it at 10 rpm or more. Belt drive, I've been ploting on how to slow it down to worm drive speeds without the backlash that comes with a sloppy worm drive. But my plotting always sticks out in the way... And even smaller with a builtin 10-1 planetary only 1/8" wide decent gears would still have plenty of move or locking power. But the first time I try to carve a bp gunstock with a 1/4" ball nose will give me a far better idea if I need more torque to carve. The math will drive me bonkers though, so its likely I should trace what looks good, and scale that. But with the length of the tracers probe, its likely I'll have to take the spindle motor out and figure out how to best trace it by mounting the probe higher than the motor but still centered in the motor holders diameter. I can easily see a 500 megabyte trace file it might take 2+ weeks to create. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
